M1.7 earthquake 6 km NW of Ruth, California

Magnitude

1.7 (md), micro

Local time

Wed, Jul 12, 1978, 8:46 AM PDT

UTC

1978-07-12 15:46:21 UTC

Depth

20.3 km (12.6 mi), shallow

Epicenter

40.313° N, 123.369° W

Region

California

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 4.4 km horizontally, 1.2 km in depth

Magnitude uncertainty

±0.01

Depth from

From location

Station coverage gap

278°, poorly surrounded by stations

Stations used

5

• Hayfork, CaliforniaPopulation 2,368. Forecast31 kmSSW
• Fortuna, CaliforniaPopulation 12,000. Forecast74 kmESE
• Chico, CaliforniaPopulation 121,345. Forecast146 kmWNW
• Los Angeles, CaliforniaPopulation 3,820,914. Forecast831 kmNNW

After

1. 1.67 km NW of Ruth, CaliforniaWed, Jul 12, 8:57 AM PDT · 17611 days ago · 23 km deep · 2 km away
2. 2.412 km NNE of Redcrest, CAFri, Jul 14, 12:33 AM PDT · 17610 days ago · 22 km deep · 51 km away
3. 2.022 km SW of Ferndale, CaliforniaFri, Jul 14, 4:26 PM PDT · 17609 days ago · 17 km deep · 95 km away
4. 3.128 km SSW of Ferndale, CaliforniaSat, Jul 15, 12:24 AM PDT · 17609 days ago · 18 km deep · 88 km away
5. 2.729 km SSW of Ferndale, CaliforniaSat, Jul 15, 1:12 AM PDT · 17609 days ago · 18 km deep · 88 km away
6. 1.920 km ENE of Westhaven-Moonstone, CaliforniaSat, Jul 15, 2:54 AM PDT · 17609 days ago · 22 km deep · 98 km away
7. 1.610 km S of Ferndale, CaliforniaSun, Jul 16, 7:24 PM PDT · 17607 days ago · 18 km deep · 80 km away
8. 2.39 km WSW of Scotia, CaliforniaMon, Jul 17, 1:51 AM PDT · 17607 days ago · 3 km deep · 73 km away
9. 2.99 km WSW of Scotia, CaliforniaMon, Jul 17, 2:53 AM PDT · 17607 days ago · 3 km deep · 73 km away
10. 1.99 km W of Scotia, CaliforniaMon, Jul 17, 3:34 AM PDT · 17607 days ago · 2 km deep · 73 km away
11. 3.010 km S of Ferndale, CaliforniaMon, Jul 17, 3:41 AM PDT · 17607 days ago · 19 km deep · 79 km away
12. 2.99 km WSW of Scotia, CaliforniaMon, Jul 17, 5:04 AM PDT · 17606 days ago · 7 km deep · 73 km away
13. 1.818 km SW of Scotia, CaliforniaMon, Jul 17, 3:30 PM PDT · 17606 days ago · 31 km deep · 75 km away
14. 1.632 km SW of Ferndale, CaliforniaMon, Jul 17, 7:21 PM PDT · 17606 days ago · 17 km deep · 96 km away
15. 1.98 km ENE of Willits, CaliforniaTue, Jul 18, 6:47 PM PDT · 17605 days ago · 4 km deep · 99 km away
16. 1.68 km ENE of Willits, CaliforniaThu, Jul 20, 11:22 AM PDT · 17603 days ago · 4 km deep · 99 km away
17. 1.934 km SSW of Ferndale, CaliforniaThu, Jul 20, 3:10 PM PDT · 17603 days ago · -1 km deep · 91 km away
18. 1.633 km SSW of Ferndale, CaliforniaFri, Jul 21, 1:40 PM PDT · 17602 days ago · 25 km deep · 93 km away
19. 1.530 km SW of Ferndale, CaliforniaFri, Jul 21, 7:02 PM PDT · 17602 days ago · 21 km deep · 93 km away
20. 2.936 km SW of Ferndale, CaliforniaSun, Jul 23, 9:11 AM PDT · 17600 days ago · 21 km deep · 97 km away
21. 1.69 km S of Ferndale, CaliforniaMon, Jul 24, 5:16 AM PDT · 17599 days ago · 18 km deep · 79 km away
22. 2.410 km S of Ferndale, CaliforniaMon, Jul 24, 11:28 AM PDT · 17599 days ago · 19 km deep · 79 km away
23. 2.69 km S of Ferndale, CaliforniaTue, Jul 25, 11:14 AM PDT · 17598 days ago · 19 km deep · 79 km away
24. 1.821 km SW of Ferndale, CaliforniaTue, Jul 25, 9:27 PM PDT · 17598 days ago · 18 km deep · 93 km away
25. 1.622 km SW of Ferndale, CaliforniaTue, Jul 25, 9:29 PM PDT · 17598 days ago · 17 km deep · 95 km away
26. 1.522 km SW of Ferndale, CaliforniaTue, Jul 25, 9:38 PM PDT · 17598 days ago · 17 km deep · 94 km away
27. 2.411 km NNE of Redcrest, CaliforniaWed, Jul 26, 2:47 PM PDT · 17597 days ago · 24 km deep · 50 km away
28. 1.89 km S of Ferndale, CaliforniaThu, Jul 27, 4:31 PM PDT · 17596 days ago · 18 km deep · 80 km away
29. 3.07 km NNW of Rancho Tehama Reserve, CaliforniaThu, Jul 27, 10:52 PM PDT · 17596 days ago · 18 km deep · 83 km away
30. 2.39 km WNW of Rancho Tehama Reserve, CaliforniaThu, Jul 27, 11:17 PM PDT · 17596 days ago · 22 km deep · 80 km away
31. 1.98 km WSW of Rancho Tehama Reserve, CaliforniaFri, Jul 28, 1:06 AM PDT · 17596 days ago · 11 km deep · 83 km away
32. 1.814 km SSW of Ferndale, CaliforniaFri, Jul 28, 10:35 AM PDT · 17595 days ago · 26 km deep · 83 km away
33. 2.122 km WSW of Weott, CaliforniaSat, Jul 29, 11:55 AM PDT · 17594 days ago · 2 km deep · 68 km away
34. 2.99 km S of Benbow, CaliforniaSun, Jul 30, 2:36 AM PDT · 17594 days ago · -1 km deep · 51 km away
35. 1.632 km SW of Ferndale, CaliforniaMon, Jul 31, 6:02 AM PDT · 17592 days ago · 31 km deep · 98 km away
36. 2.35 km W of Scotia, CaliforniaMon, Jul 31, 5:24 PM PDT · 17592 days ago · 21 km deep · 70 km away
37. 2.96 km SW of Redcrest, CaliforniaTue, Aug 1, 4:23 PM PDT · 17591 days ago · 26 km deep · 55 km away
38. 3.317 km ESE of Blue Lake, CaliforniaTue, Aug 1, 10:32 PM PDT · 17591 days ago · 32 km deep · 66 km away
39. 2.229 km WNW of Cleone, CaliforniaWed, Aug 2, 4:06 AM PDT · 17591 days ago · 4 km deep · 98 km away
40. 1.834 km SW of Ferndale, CaliforniaWed, Aug 2, 4:40 AM PDT · 17590 days ago · 25 km deep · 99 km away
41. 1.92 km NE of Fieldbrook, CaliforniaWed, Aug 2, 11:39 AM PDT · 17590 days ago · 19 km deep · 92 km away
42. 1.622 km WSW of Weott, CaliforniaWed, Aug 2, 9:25 PM PDT · 17590 days ago · 4 km deep · 69 km away
43. 3.135 km SSW of Ferndale, CaliforniaWed, Aug 2, 11:44 PM PDT · 17590 days ago · 26 km deep · 95 km away
44. 1.734 km SSW of Ferndale, CaliforniaThu, Aug 3, 2:59 AM PDT · 17590 days ago · 25 km deep · 94 km away
45. 2.410 km WNW of Hyampom, CaliforniaThu, Aug 3, 6:55 PM PDT · 17589 days ago · 32 km deep · 41 km away
46. 2.2near the coast of Northern CaliforniaSat, Aug 5, 9:42 AM PDT · 17587 days ago · 26 km deep · 91 km away
47. 1.79 km S of Ferndale, CaliforniaSun, Aug 6, 6:17 AM PDT · 17586 days ago · 18 km deep · 78 km away
48. 1.58 km SSW of Scotia, CaliforniaMon, Aug 7, 7:03 AM PDT · 17585 days ago · 25 km deep · 67 km away
49. 2.36 km S of Ferndale, CaliforniaMon, Aug 7, 8:56 AM PDT · 17585 days ago · 8 km deep · 79 km away
50. 1.613 km WNW of Willow Creek, CaliforniaMon, Aug 7, 12:45 PM PDT · 17585 days ago · 22 km deep · 83 km away
51. 1.831 km SSW of Ferndale, CaliforniaMon, Aug 7, 8:32 PM PDT · 17585 days ago · 19 km deep · 93 km away
52. 1.69 km S of Ferndale, CaliforniaTue, Aug 8, 3:31 AM PDT · 17585 days ago · 18 km deep · 79 km away
53. 1.75 km ENE of Redcrest, CaliforniaTue, Aug 8, 5:35 AM PDT · 17584 days ago · 22 km deep · 46 km away
54. 1.523 km NE of Redcrest, CaliforniaTue, Aug 8, 12:57 PM PDT · 17584 days ago · 23 km deep · 43 km away
55. 2.726 km SSW of Ferndale, CaliforniaWed, Aug 9, 4:46 AM PDT · 17583 days ago · 19 km deep · 89 km away
56. 1.610 km S of Ferndale, CaliforniaFri, Aug 11, 1:35 AM PDT · 17582 days ago · 18 km deep · 79 km away
57. 2.612 km SSE of Laytonville, CaliforniaFri, Aug 11, 7:43 AM PDT · 17581 days ago · -1 km deep · 82 km away
58. 2.823 km SSW of Ferndale, CaliforniaSat, Aug 12, 1:48 PM PDT · 17580 days ago · 30 km deep · 86 km away
59. 2.113 km SSE of Mad River, CaliforniaSun, Aug 13, 8:15 AM PDT · 17579 days ago · -1 km deep · 9 km away
60. 2.922 km SSW of Ferndale, CaliforniaSun, Aug 13, 5:11 PM PDT · 17579 days ago · 29 km deep · 86 km away

The first 60 of 132.

Before

1. 1.55 km WNW of Weott, CaliforniaWed, Jul 12, 8:45 AM PDT · 17611 days ago · 4 km deep · 52 km away
2. 3.37 km NW of Ruth, CaliforniaWed, Jul 12, 8:43 AM PDT · 17611 days ago · 30 km deep · 2 km away
3. 2.43 km SSE of Fieldbrook, CaliforniaTue, Jul 11, 10:56 AM PDT · 17612 days ago · 28 km deep · 88 km away
4. 2.635 km SW of Ferndale, CaliforniaSun, Jul 9, 9:10 AM PDT · 17614 days ago · 24 km deep · 97 km away
5. 2.731 km SSW of Ferndale, CaliforniaFri, Jul 7, 8:39 PM PDT · 17616 days ago · 11 km deep · 89 km away
6. 1.811 km NW of Hayfork, CaliforniaThu, Jul 6, 11:18 AM PDT · 17617 days ago · 4 km deep · 35 km away
7. 1.516 km WSW of Ferndale, CaliforniaWed, Jul 5, 3:49 PM PDT · 17618 days ago · 21 km deep · 91 km away
8. 1.97 km WNW of Ferndale, CaliforniaWed, Jul 5, 7:03 AM PDT · 17618 days ago · 19 km deep · 88 km away
9. 2.334 km SSW of Ferndale, CaliforniaWed, Jul 5, 2:39 AM PDT · 17619 days ago · 25 km deep · 94 km away
10. 2.56 km SSW of Scotia, CaliforniaTue, Jul 4, 11:50 AM PDT · 17619 days ago · 25 km deep · 65 km away
11. 2.319 km SSE of Ruth, CaliforniaMon, Jul 3, 9:52 PM PDT · 17620 days ago · 5 km deep · 25 km away
12. 1.725 km SSW of Scotia, CaliforniaMon, Jul 3, 7:11 PM PDT · 17620 days ago · -1 km deep · 75 km away
13. 1.710 km WNW of Manila, CaliforniaMon, Jul 3, 4:22 PM PDT · 17620 days ago · 20 km deep · 100 km away
14. 2.030 km SSW of Ferndale, CaliforniaSun, Jul 2, 8:57 AM PDT · 17621 days ago · 30 km deep · 91 km away
15. 2.436 km SW of Ferndale, CaliforniaSat, Jul 1, 12:03 AM PDT · 17623 days ago · 22 km deep · 99 km away
16. 3.39 km S of Ferndale, CaliforniaFri, Jun 30, 7:58 PM PDT · 17623 days ago · 19 km deep · 79 km away
17. 2.221 km WNW of Hyampom, CaliforniaWed, Jun 28, 3:59 AM PDT · 17626 days ago · 25 km deep · 48 km away
18. 1.517 km S of Ferndale, CaliforniaWed, Jun 28, 3:57 AM PDT · 17626 days ago · 20 km deep · 79 km away
19. 1.67 km W of Rio Dell, CaliforniaMon, Jun 26, 2:45 PM PDT · 17627 days ago · 19 km deep · 73 km away
20. 2.735 km SW of Ferndale, CaliforniaMon, Jun 26, 11:59 AM PDT · 17627 days ago · 27 km deep · 98 km away

From the USGS Earthquake Hazards Program and its partner networks, event nc1041015. Read Tue, Sep 29, 2026, 10:42 PM UTC.